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Friday, January 21, 2011

Tulip Nebula, Sh2-101, wide field & closeup, reprocessed




Since my processing technique gets better and weather doesn't give any support, I have reprocessed some older images. There is now star colors added and other processing is tweaked too.

Sh2-101, wide field
In constellation Cygnus


Image is in HST-palette, (HST=Hubble Space Telescope)

from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Star colors are mixed from the NB channels, Red=H-a, G=O-III and B= 85%O-III + 15%H-a.


Nebula is imaged with a Tokina AT 300mm f2.8 camera optics and the QHY8 cooled astro camera.
Technical details with an original image.
The "Tulip Nebula", Sharpless-101, locates in constellation Cygnus,  distance is about 6000 light years.


Natural color composition from the emission of ionized elements, R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15%Hydrogen to compensate otherwise missing H-beta emission. This composition is very close to a visual spectrum. 


Original versions from November 2008, with technical details:


Sh2-101, Closeup
In constellation Cygnus



Image is in HST-palette, (HST=Hubble Space Telescope)

from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
Star colors are mixed from the NB channels, Red=H-a, G=O-III and B= 85%O-III + 15%H-a.


Nebula is imaged with a Meade LX200 GPS 12" @f5 and the QHY9 cooled astro camera.
Technical details with an original image.


Natural color composition from the emission of ionized elements, R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15%Hydrogen to compensate otherwise missing H-beta emission. This composition is very close to a visual spectrum. 


Original versions from October 2009, with technical details:


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